*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#root{
  width: 100vw;
  height: 100vh;
  position: relative;
  background: radial-gradient(#fec, #249);
}

.slider-wrapper{
  width: 480px;
  height: 270px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.slider-wrapper .btn{
  width: 60px;
  height: 60px;
  background: rgba(0,0,0,0.5);
  position: absolute;
  top: 50%;
  transform: translateY(-50%); 
  border-radius: 50%;
  color: white;
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  line-height: 60px;
  user-select: none;
  cursor: pointer;
}

.slider-wrapper .next{
  right: 0;
}

